This is a discussion on M&P 40 full size to 9mm conversion within the MP Full Size Pistols forums, part of the Smith & Wesson MP Forum category; I have a wonderful solution: By one of each and enjoy the dilemma! I own a 9mm and 2 40 cal and I love them ...
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|March 11th, 2014, 05:18 PM||#16|
Join Date: Mar 2014
Location: Blossom, Texas
I have a wonderful solution: By one of each and enjoy the dilemma! I own a 9mm and 2 40 cal and I love them all like children!
|March 26th, 2014, 03:06 PM||#17|
Join Date: Feb 2014
Location: South Dakota
The Storm Lake conversion barrel fits perfectly. I put a caliper on the two barrels and they are identical in dimensions. There is a slight difference in the feed ramp. Appears that the SL conversion barrel is slightly wider. Also a slight difference at the base of the forward lock-up tang.
Here's some comparison pictures between the stock 40 cal and SL 9mm conversion barrels.
Last edited by Roadtrip; March 26th, 2014 at 03:20 PM.
|May 15th, 2014, 11:49 AM||#18|
Join Date: May 2014
Just saying thanks...
Just saying thanks to everyone who contributed to this discussion.. Bought my first M&P recently and was thinking of converting from 40 to 9 for practice and to help reduce target shooting costs. The information in this thread answered a lot of questions and concerns I had, and helped me make the decision to "pull the trigger" on getting a conversion barrel.
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|September 18th, 2014, 03:58 PM||#21|
Join Date: Nov 2008
Location: portsmouth virginia
I just got my bar sto barrel from brownell last week. got to get to the range and try it, also got 2 S&W 9mm mag's today from greg cote. they were cheaper than brownell's even with my discount. if you got to do it do it right.
|September 18th, 2014, 05:52 PM||#22|
Join Date: Dec 2009
Location: Salish Sea
|December 6th, 2014, 07:48 PM||#23|
Join Date: Jun 2013
I remember back in the day when you welded to the 1911 barrel to tighten up the fit so could one use a stock s&w 9mm barrel and weld to fit the hood to make as safe as a storm lake barrel?
I havent been able to find one at all anywhere.
|December 7th, 2014, 11:59 AM||#24|
Join Date: Oct 2007
Adding that much heat to the chanber could have a significant effect on the margin of safety. Keep in mind that 9mm/40S&W/357 Sig are almost twice the pressure of those 45ACP barrels you used to weld on.
|December 8th, 2014, 05:07 PM||#26|
Join Date: Aug 2012
|May 30th, 2016, 07:43 PM||#27|
Join Date: Mar 2016
I have a Storm Lake conversion barrel for my full size .40. I just got it recently(used)
with a couple of new 9mm mags. I've only shot 100 rounds through it so far, but those rounds
were accurate and without incident. zero malfunctions.
I'm hoping to get back out there maybe tomorrow after work and shooting another
50 rounds with it. so far so good here.
|July 7th, 2016, 05:54 PM||#28|
Join Date: Mar 2016
up to 400 rounds now, the storm lake barrel has performed flawlessly in my FS .40]
I have someone local to me who has a .40C with a 9mm and a .357 barrel and 9 mags.
|December 17th, 2016, 06:40 PM||#29|
Join Date: Mar 2013
Thank everyone, this is why I just got the Storm Lake barrel from Brownells and mags from Midway. Can't wait to get the range.
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|40s&w, 9mm, barrel, conversion|
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